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1 watt-second = ……….. Joule....

1 watt-second = ……….. Joule.

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An object of mass 120g is taken upward at the height 5 m, then ………….. Joule work is done. (g=10ms^(-2))

An object of mass 120g is taken upward at the height 5 m, then ………….. Joule work is done. (g=10ms^(-2))

Knowledge Check

  • The electrical energy consumed in our homes is measured in " UNIT" . 1 UNIT = ………. Joule .

    A
    3600
    B
    `36,00,000`
    C
    `36,000`
    D
    `3,60,000`

  • What is the value of Gas constant R in Joule "Kelvin"^(-1) mol^(-1) ?

    A
    `0.0821`
    B
    `82.1`
    C
    `1.987`
    D
    `8.3144`

  • An electron completes 25 rotations in 1 seconds on circular path, then amount or electric charge passing through any point in circular path in 10 seconds is .... .

    A
    `4 xx 10^(20)` C
    B
    `4 xx 10^(-19)` C
    C
    `4 xx 10^(-18) C `
    D
    `4 xx 10^(-17) C `

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    1 Meg watt = ……….. erg/second .

    State and explain the Joule.s law of heating.

    An object is moving with constant acceleration. Its velocity is 48 ms^(-1) at the end of 10 second and becomes 68 ms^(-1) at the end of 15 second. What would be the distance travelled by the object in 15 second ?

    At the one bar pressure the volume of gas is 0.6 litre. If the gas receives 122 Joule of heat at 1 atmosphere pressure, the volume become . 2 liter the calculate its internal energy. (1 litre bar = 101.32 Joule)

    The unit of power is …………… (joule, watt, unit)

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